> Project ProjetoSupermercado.exe raise exception class EIB_ISCError
> with message 'ISC ERROR CODE:335544569
> ISC ERRROR MESSAGE:
> Dynamic SQL Error
> SQL error code = -204
> Table unknowm
> IBO$SCHEMA_VERSION
> At: line 2, column 6.
> ',Process stopped. Use Step or Run to continue

This exception is silenced and you can ignore it.
Or, if you would like to create a schema version table that would solve it
too.

Jason Wharton